Number Sum Calculator

How the number sum calculator works

Paste or type a list of numbers separated by commas, spaces, semicolons, or new lines. The tool parses every token, ignores anything that isn't a valid number (and tells you which tokens were skipped), and instantly computes the sum, count, average (mean), median, minimum, and maximum of the remaining values.

The average is the sum divided by the count: average = sum ÷ count. The median is the middle value once the numbers are sorted (or the average of the two middle values when the count is even) — useful when a few extreme outliers would otherwise skew the average. Negative numbers and decimals are fully supported. Everything runs locally in your browser; nothing you type is uploaded anywhere.